Novel quick coupling device

Abstract

The invention discloses a novel quick connector device, and particularly relates to the technical field of coiled tubing installation, the novel quick connector device comprises a slip bowl and a coiled tubing, an outer sleeve is sleeved between the exterior of the adjacent end of the slip bowl and the exterior of the adjacent end of the coiled tubing, a pressing sleeve is fixedly sleeved on the outer sleeve and located on the outer side of the slip bowl, and a piston ring is movably arranged in the pressing sleeve. A piston is arranged on one side of the piston ring and located in the pressing sleeve, and a power rod is fixedly arranged in the piston and located on the outer side of the slip bowl. The interior of the pressurizing sleeve is pressurized through the inflating device, so that the pressure in a cavity of the pressurizing sleeve is increased, the pressure pushes a piston ring to move rightwards, the piston ring can drive a piston to move rightwards, and therefore the slip is driven to move rightwards; when the coiled tubing is clamped, the slips clamp inwards, so that the aim of clamping the coiled tubing is fulfilled, a spring is not needed, the overall stability is good, and the service life is long.

Description

Technical Field

[0001] The present invention relates to the technical field of continuous oil pipe installation, and more specifically, to a novel quick connector device. Background Art

[0002] Coiled tubing is a pipeline system used for oilfield development and oil well production. It is composed of a series of seamless steel pipes or welded steel pipes, which can work normally under high pressure and high temperature environment, and is used to transport oil, natural gas and other fluid media. When working underground, the connection between the coiled tubing and the downhole tools is generally made by welding.

[0003] The utility model with announcement number CN218719492U discloses a novel oil pipe joint, comprising two oil pipes and a connecting ring for connecting the two oil pipes, wherein the outer wall of the oil pipe is fixedly connected with a sealing sleeve, the outer wall of the connecting ring is provided with a rotating groove, and an adjusting ring is rotatably connected in the rotating groove of the outer wall of the connecting ring, a cavity is provided in the connecting ring, and two movable plates are movably connected in the cavity of the connecting ring, by inserting the two oil pipes in the connecting ring and the sealing sleeve in the adjusting ring, the two oil pipes and the connecting ring are kept in a sealed state, and the adjusting ring is rotated at the same time, the adjusting ring pushes the limit block, the guide column and the movable plate to move through the pushing block, so that the locating pin is inserted in the locating hole of the sealing sleeve, and the connection between the two oil pipes can be quickly completed, and by rotating the adjusting ring in the opposite direction, the pushing block is separated from the limit block, the supporting spring is retracted, and the movable plate and the locating pin are driven to reset, so that the locating pin is separated from the locating hole of the sealing sleeve, and the two oil pipes can be quickly disassembled.

[0004] However, when the above patent is in use, the sliding block and the fixing pin are pushed to move under the elastic force of the fixing spring, so that the fixing pin is inserted into the fixing hole of the adjusting ring. However, the fixing spring will produce mechanical fatigue during long-term use, which will cause the elastic force of the fixing spring to deteriorate, and it will be unable to effectively push the sliding block and the fixing pin to move, thereby affecting the stability of the connection and resulting in poor use effect. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a novel quick connector device, which aims to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a novel quick connector device, comprising a slip seat and a continuous oil pipe, an outer cylinder sleeve is sleeved between the slip seat and the outer sides of the adjacent ends of the continuous oil pipe, a pressure sleeve is provided on the outer cylinder sleeve and located on the outer side of the slip seat, a piston ring is movably provided inside the pressure sleeve, a piston is provided on one side of the piston ring and located inside the pressure sleeve, a power rod is fixedly provided inside the piston and located on the outer side of the slip seat, a slip is movably provided inside the outer cylinder sleeve, and the slip is fixedly connected to the slip seat, and an inclined groove is provided on the side of the slip close to the outer cylinder sleeve.

[0007] It can be seen that in the above technical solution, the outer sleeve is set on the continuous oil pipe, and one end of the continuous oil pipe extends into the interior of the cava seat, and then the pipe end of the inflation device is connected to the first air pipe, so that the inflation device is connected to the pressure sleeve, and the interior of the pressure sleeve is pressurized through the inflation device.

[0008] Furthermore, two rib screws are provided inside the piston, and the piston and the piston ring are fixed by the two rib screws.

[0009] It can be seen that in the above technical solution, the fixation between the piston and the piston ring can be released by two rib screws, and the piston and the piston ring can be inspected and replaced.

[0010] Furthermore, a first air pipe is fixedly connected inside the compression sleeve and located on one side of the piston ring, and the top end of the first air pipe extends out of the compression sleeve and is fixedly connected to the compression sleeve.

[0011] It can be seen that in the above technical solution, the pipe end of the inflation device is connected to the first air pipe, so that the inflation device is connected to the compression sleeve.

[0012] Furthermore, a locking block is connected to one side of the slip and is located inside the outer sleeve, and a locking seat is provided on the inner side of the locking block and is located outside the coiled tubing.

[0013] It can be seen that in the above technical solution, when the slips clamp the coiled tubing, the pins are fixed in the pin holes of the outer sleeve and the locking block, so that the entire device can be fixed, thereby ensuring the stability of the quick connector fixation.

[0014] Furthermore, a second end cover is fixedly connected to a side of the locking seat away from the slip seat, and one side of the second end cover is fixedly connected to the outer sleeve.

[0015] It can be seen that in the above technical solution, by providing the second end cover, it is convenient to fix one side of the outer cylinder sleeve.

[0016] Furthermore, the outer movable sleeve of the slip seat is provided with a first end cover, and one side of the first end cover is fixedly connected to the pressure sleeve.

[0017] It can be seen that in the above technical solution, by providing the first end cover, it is convenient to fix one side of the compression sleeve.

[0018] Furthermore, a rubber sleeve is provided on the continuous oil pipe and in a movable sleeve inside the slip seat, and a clamping seat is fixedly connected to one side of the rubber sleeve.

[0019] It can be seen that in the above technical solution, when the teeth of the rubber sleeve and the holder are engaged, the sealing performance of the connection is good.

[0020] Furthermore, a cut-off assembly is provided on one side of the slip seat, and the cut-off assembly includes a side tube, an air bag, a second air pipe, four fixing blocks and a sealing gasket.

[0021] Furthermore, one end of the side tube is fixedly connected to the cava seat, two ends of the four fixed blocks are respectively fixedly connected to the side tube and the airbag, the bottom end of the second air pipe is fixedly connected to the airbag, and the top end of the second air pipe passes through the side tube and is fixedly connected to the airbag, and the sealing pad is located on the side of the side tube away from the cava seat.

[0022] It can be seen that in the above technical solution, the pipe end of the inflation device is brought into contact with the second air pipe, so that the inflation device is connected to the airbag. When a fault occurs in the oil circuit, the airbag is inflated through the inflation device.

[0023] Technical effects and advantages of the present invention:

[0024] 1. The present invention pressurizes the inside of the pressure sleeve through the inflating device, so that the pressure in the cavity of the pressure sleeve increases, and the pressure pushes the piston ring to move rightward, and the piston ring can drive the piston to move rightward, thereby driving the power rod to move rightward, and the power rod can drive the slip seat to move rightward, and the slip seat can drive the slip to move rightward. Because of the existence of the inclined surface of the contact surface between the outer sleeve and the slip, when the slip moves to the right, it will squeeze the inclined surface, and the slip will clamp inward, thereby achieving the purpose of clamping the coiled tubing, without the need to set a spring, the overall stability is good, and the service life is long;

[0025] 2. In the present invention, the oil enters the gap between the coiled tubing and the rubber cartridge from the inside of the quick connector, and the oil flows from the round hole in the rubber cartridge into the cavity between the rubber cartridge and the slip seat. As the amount of oil increases, the outer side of the rubber cartridge can be pressed and squeezed in the direction of the coiled tubing, so that the teeth of the rubber cartridge and the slip seat are meshed, thereby ensuring the sealing of the connection, the oil is not easy to leak, and the use effect is good;

[0026] 3. The present invention inflates the airbag through an inflation device, and the gas enters the airbag through the second air pipe. The airbag expands when inflated, thereby blocking the side pipe, thereby intercepting the oil and preventing the oil from flowing out through the side pipe. The operation is simple and the safety performance is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0028] Figure 1 This is a schematic diagram of the overall structure of a novel quick connector device of the present invention;

[0029] Figure 2 It is a sectional view of the overall structure of a novel quick connector device of the present invention;

[0030] Figure 3 It is a sectional view of a slip seat and a sectional view of a coiled tubing assembly of a novel quick connector device of the present invention;

[0031] Figure 4 It is a three-dimensional assembly diagram of a first end cover and a compression sleeve in a cross-sectional view of a novel quick connector device of the present invention;

[0032] Figure 5 This is a schematic structural diagram of a cut-off assembly of a novel quick connector device of the present invention;

[0033] Figure 6 A novel quick connector device of the present invention Figure 2 A magnified view of the structure in the middle;

[0034] Figure 7 A novel quick connector device of the present invention Figure 2 A magnified view of the structure in middle B.

[0035] In the figure: 1, slip seat; 2, continuous oil pipe; 3, pressure sleeve; 4, outer sleeve; 5, first end cover; 6, first air pipe; 7, second end cover; 8, shut-off assembly; 9, rubber cylinder; 10, seat; 11, slip; 12, tightening screw; 13, locking block; 14, locking seat; 15, piston; 16, tendon screw; 17, power rod; 18, piston ring; 801, side pipe; 802, air bag; 803, second air pipe; 804, fixing block; 805, sealing gasket. DETAILED DESCRIPTION

[0036] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Refer to the instruction manual Figure 1-7 A novel quick connector device of this embodiment includes a slip seat 1 and a coiled tubing 2. An outer sleeve 4 is sleeved between the outer ends of the slip seat 1 and the coiled tubing 2. A pressure sleeve 3 is fixedly sleeved on the outer sleeve 4 and located on the outer side of the slip seat 1. A piston ring 18 is movably provided inside the pressure sleeve 3. A piston 15 is provided on one side of the piston ring 18 and located inside the pressure sleeve 3. A power rod 17 is fixedly provided inside the piston 15 and located outside the slip seat 1. A slip 11 is movably provided inside the outer sleeve 4, and the slip 11 is fixedly connected to the slip seat 1. One side of the slip 11 near the outer sleeve 4 An oblique groove is opened on the side, two rib screws 16 are arranged inside the piston 15, and the piston 15 and the piston ring 18 are fixed by the two rib screws 16. The fixation between the piston 15 and the piston ring 18 can be released by the two rib screws 16, and the piston 15 and the piston ring 18 can be inspected and replaced. A first air pipe 6 is fixedly connected inside the compression sleeve 3 and located on one side of the piston ring 18, and the top end of the first air pipe 6 extends out of the compression sleeve 3 and is fixedly connected to the compression sleeve 3. The first air pipe 6 is connected to the pipe end of the inflation device, so that the inflation device is connected to the compression sleeve 3.

[0038] Furthermore, a locking block 13 is connected to one side of the slip 11 and is located inside the outer sleeve 4. A locking seat 14 is provided on the inner side of the locking block 13 and is located outside the continuous oil pipe 2. When the slip 11 clamps the continuous oil pipe 2, the pins are fixed in the pin holes of the outer sleeve 4 and the locking block 13, so that the entire device can be fixed, thereby ensuring the stability of the quick connector fixation.

[0039] Furthermore, a second end cover 7 is fixedly connected to a side of the locking seat 14 away from the cava seat 1, and one side of the second end cover 7 is fixedly connected to the outer cylinder sleeve 4. A first end cover 5 is provided on the outer movable sleeve of the cava seat 1, and one side of the first end cover 5 is fixedly connected to the pressure sleeve 3. By setting the second end cover 7, it is convenient to fix one side of the outer cylinder sleeve 4, and by setting the first end cover 5, it is convenient to fix one side of the pressure sleeve 3.

[0040] Furthermore, a rubber sleeve 9 is provided on the coiled tubing 2 and is movably sleeved inside the slip seat 1 , and a clamping seat 10 is fixedly connected to one side of the rubber sleeve 9 .

[0041] Furthermore, a cut-off assembly 8 is provided on one side of the cava seat 1, and the cut-off assembly 8 includes a side tube 801, an air bag 802, a second air pipe 803, four fixed blocks 804 and a sealing gasket 805. One end of the side tube 801 is fixedly connected to the cava seat 1, and both ends of the four fixed blocks 804 are fixedly connected to the side tube 801 and the air bag 802 respectively. The bottom end of the second air pipe 803 is fixedly connected to the air bag 802, and the top end of the second air pipe 803 passes through the side tube 801 and is fixedly connected thereto. The sealing gasket 805 is located on the side of the side tube 801 away from the cava seat 1.

[0042] Among them, the pipe end of the inflation device is brought into contact with the second air pipe 803, so that the inflation device is connected to the airbag 802. When the oil circuit fails, the airbag 802 is inflated through the inflation device, and the gas enters the airbag 802 through the second air pipe 803. The airbag 802 is inflated and expands, thereby blocking the side pipe 801, thereby intercepting the oil and preventing the oil from flowing out through the side pipe 801. The operation is simple and the safety performance is high. At the same time, the side of the side pipe 801 away from the cava seat 1 is a threaded structure, so the side pipe 801 can be quickly connected with other tools, and the sealing gasket 805 can improve the sealing of the connection between the side pipe 801 and other tools.

[0043] The method of using this embodiment is:

[0044] When in use, the outer sleeve 4 is sleeved on the continuous oil pipe 2, and one end of the continuous oil pipe 2 extends into the interior of the slip seat 1, and then the pipeline end of the inflation device is connected to the first air pipe 6, so that the inflation device is connected to the pressure sleeve 3, and the pressure inside the pressure sleeve 3 is pressurized by the inflation device, so that the pressure in the cavity of the pressure sleeve 3 increases, and the pressure pushes the piston ring 18 to move rightward. Since the piston ring 18 and the piston 15 are fixed by two tendon screws 16, the piston ring 18 can drive the piston 15 to move rightward. , thereby driving the power rod 17 to move rightward. Since the power rod 17 is clamped with the slip seat 1, the power rod 17 can drive the slip seat 1 to move rightward. Since the slip seat 1 is fixed to the slip 11 through the inclined groove, the slip seat 1 can drive the slip 11 to move rightward. Due to the existence of the inclined surface of the contact surface between the outer sleeve 4 and the slip 11, when the slip 11 moves to the right, the inclined surface will be squeezed, and the slip 11 will be clamped inwardly, thereby achieving the purpose of clamping the coiled tubing 2. No spring is required, the overall stability is good, and the service life is long.

[0045] When pressurized, the slip seat 1 moves to the right, causing a gap between the slip seat 1 and the coiled tubing 2. The oil enters the gap between the coiled tubing 2 and the rubber cylinder 9 from the inside of the quick connector. The oil flows from the round hole in the rubber cylinder 9 into the cavity between the rubber cylinder 9 and the slip seat 1. As the oil increases, it can press the outer side of the rubber cylinder 9 and squeeze in the direction of the coiled tubing 2, so that the teeth of the rubber cylinder 9 and the seat 10 are meshed, thereby ensuring the sealing of the connection, making it difficult for the oil to leak and having a good use effect.

[0046] It is worth noting that the inflation device in the specification is an inflation pump, which can quickly inject gas into the inflated object. At the same time, the inflation pump is small in size and easy to carry and use. The structure and model of the inflation pump belong to the prior art known to technical personnel in this field and will not be elaborated here.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel quick connector device, comprising a slip seat (1) and a coiled tubing (2), wherein an outer sleeve (4) is sleeved between the outer sides of the slip seat (1) and the coiled tubing (2), and a pressure sleeve (3) is provided on the outer sleeve (4) and located on the outer side of the slip seat (1), characterized in that: A piston ring (18) is movably provided inside the pressure sleeve (3), a piston (15) is provided on one side of the piston ring (18) and located inside the pressure sleeve (3), a power rod (17) is fixedly provided inside the piston (15) and located outside the slip seat (1), a slip (11) is movably provided inside the outer sleeve (4), and the slip (11) is fixedly connected to the slip seat (1), and an inclined groove is provided on one side of the slip (11) close to the outer sleeve (4).

2. A novel quick connector device according to claim 1, characterized in that: Two rib screws (16) are arranged inside the piston (15), and the piston (15) and the piston ring (18) are fixed by the two rib screws (16).

3. A novel quick connector device according to claim 1, characterized in that: A first air pipe (6) is fixedly connected inside the compression sleeve (3) and located on one side of the piston ring (18), and the top end of the first air pipe (6) extends out of the compression sleeve (3) and is fixedly connected to the compression sleeve (3).

4. A novel quick connector device according to claim 1, characterized in that: A locking block (13) is connected to one side of the slip (11) and is located inside the outer sleeve (4). A locking seat (14) is provided inside the locking block (13) and is located outside the coiled tubing (2).

5. A novel quick connector device according to claim 4, characterized in that: A second end cover (7) is fixedly connected to the side of the locking seat (14) away from the slip seat (1), and one side of the second end cover (7) is fixedly connected to the outer sleeve (4).

6. A novel quick connector device according to claim 1, characterized in that: The outer movable sleeve of the slip seat (1) is provided with a first end cover (5), and one side of the first end cover (5) is fixedly connected to the pressure sleeve (3).

7. A novel quick connector device according to claim 1, characterized in that: A rubber sleeve (9) is provided on the continuous oil pipe (2) and is movably sleeved inside the slip seat (1), and a clamping seat (10) is fixedly connected to one side of the rubber sleeve (9).

8. A novel quick connector device according to claim 1, characterized in that: A cut-off assembly (8) is provided on one side of the slip seat (1), and the cut-off assembly (8) comprises a side tube (801), an air bag (802), a second air pipe (803), four fixing blocks (804) and a sealing pad (805).

9. A novel quick connector device according to claim 8, characterized in that: One end of the side tube (801) is fixedly connected to the slip seat (1), and two ends of the four fixing blocks (804) are respectively fixedly connected to the side tube (801) and the air bag (802), the bottom end of the second air tube (803) is fixedly connected to the air bag (802), and the top end of the second air tube (803) passes through the side tube (801) and is fixedly connected thereto, and the sealing pad (805) is located on a side of the side tube (801) away from the slip seat (1).

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